Herbal teas containing ingredients such as chamomile or fennel may trigger digestive symptoms in some people, according to experts. These teas contain fructans, a type of carbohydrate that can be difficult for the body to digest, particularly for individuals with Irritable Bowel Syndrome (IBS).
Fructans and FODMAPs
Monash University, which developed the internationally recognised low-FODMAP diet, states that chamomile and fennel are high in fructans. Fructans belong to a group of fermentable carbohydrates known as FODMAPs. When they aren't fully absorbed in the small intestine, they travel to the large bowel, where gut bacteria ferment them, producing gas that can lead to bloating, abdominal pain, and discomfort.
Impact on IBS Sufferers
Research cited by Monash University says some people with IBS can experience "extreme bloating" after consuming high-FODMAP foods and drinks. The NHS notes that IBS is a common condition affecting the digestive system, with symptoms including bloating, stomach cramps, diarrhoea, and constipation. There is no single food that affects everyone, but keeping a detailed food diary and identifying personal triggers can help reduce flare-ups.
Better Alternatives
Monash University recommends peppermint tea as a low-FODMAP option that is generally better tolerated. Ginger tea may also be suitable for many people, although individual tolerance can vary. The British Dietetic Association advises that anyone experiencing persistent bloating or digestive symptoms should seek medical advice rather than cutting out large groups of foods unnecessarily. Dietary changes for IBS are often most effective when carried out with support from a registered healthcare professional or dietitian.
While a morning herbal tea may seem like a healthy choice, experts emphasise that what works for one person's gut may not suit another. Understanding your own triggers could be key to avoiding discomfort.
